Jails, ping, and now DNS

[James B. Byrne]

Ok, this jail setup thing is slowly driving me mad.  Can someone
explain the following behaviour observed on a jail (hll124) set up
using ezjail?

root at hll107:~ # sysctl security.jail.allow_raw_sockets
security.jail.allow_raw_sockets: 1

root at hll107:~ # service local_unbound onestatus
local_unbound is running as pid 76810.

root at hll107:~ # drill vhost04.hamilton.harte-lyne.ca

;; flags: qr rd ra ; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:


;; vhost04.hamilton.harte-lyne.ca.      IN      A

;; ANSWER SECTION:
vhost04.hamilton.harte-lyne.ca. 172765  IN      A       216.185.71.44

;; AUTHORITY SECTION:
harte-lyne.ca.  172765  IN      NS      dns04.harte-lyne.ca.
harte-lyne.ca.  172765  IN      NS      dns01.harte-lyne.ca.
harte-lyne.ca.  172765  IN      NS      dns03.harte-lyne.ca.
harte-lyne.ca.  172765  IN      NS      dns02.harte-lyne.ca.

;; ADDITIONAL SECTION:
dns01.harte-lyne.ca.    172765  IN      A       216.185.71.33
dns02.harte-lyne.ca.    172765  IN      A       209.47.176.33
dns03.harte-lyne.ca.    172765  IN      A       216.185.71.34
dns04.harte-lyne.ca.    172765  IN      A       209.47.176.34

;; Query time: 0 msec
;; SERVER: 127.0.0.1
;; WHEN: Fri Feb  2 14:34:17 2018
;; MSG SIZE  rcvd: 208

root at hll107:~ # ping 216.185.71.44
PING 216.185.71.44 (216.185.71.44): 56 data bytes
64 bytes from 216.185.71.44: icmp_seq=0 ttl=64 time=0.357 ms
64 bytes from 216.185.71.44: icmp_seq=1 ttl=64 time=0.382 ms
^C
--- 216.185.71.44 ping statistics ---
3 packets transmitted, 2 packets received, 33.3% packet loss
round-trip min/avg/max/stddev = 0.357/0.369/0.382/0.012 ms

root at hll107:~ # ping vhost04.hamilton.harte-lyne.ca
ping: cannot resolve vhost04.hamilton.harte-lyne.ca: Host name lookup
failure

root at hll107:~ #



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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3